package cs.sy.service.servlet;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class CharFilter implements Filter {

	@Override
	public void destroy() {
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		request.setCharacterEncoding("utf-8");
		//传递给下一个过滤器。这里没有下一个，作为过滤器的规则和良好的编程习惯，应该加上
		chain.doFilter(request,response);
		//处理响应字符集
		response.setContentType("text/html;charset=utf-8");
	}

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		
	}


}
